84171912 has 32 divisors (see below), whose sum is σ = 229560480. Its totient is φ = 25506560.

The previous prime is 84171907. The next prime is 84171931. The reversal of 84171912 is 21917148.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159153 + ... + 159680.

It is an arithmetic number, because the mean of its divisors is an integer number (7173765).

Almost surely, 2^84171912 is an apocalyptic number.

It is an amenable number.

84171912 is an abundant number, since it is smaller than the sum of its proper divisors (145388568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84171912 is a wasteful number, since it uses less digits than its factorization.

84171912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318853 (or 318849 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 84171912 is about 9174.5251648246. The cubic root of 84171912 is about 438.2504770292.

The spelling of 84171912 in words is "eighty-four million, one hundred seventy-one thousand, nine hundred twelve".